A number of print and web-based materials are available for free or at low cost from various extension and non-profit organization offices. For Missouri producers, the Jefferson Institute has a free sunflower information kit that goes into detail on several aspects of producing and marketing sunflowers (call 573-449-3518). The National Sunflower Association has good information on their website (www.sunflowernsa.com) as well as print bulletins and brochures. There is additional information at www.jeffersoninstitute.org.